S2000 Under The Hood S2000 Technical and Mechanical discussions.

Need Help, Pits in Cylinder head.

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Old 05-30-2012, 01:26 PM
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Default Need Help, Pits in Cylinder head.

Here's the story, I bought a head off of a memeber here on S2Ki. He said it was in great condition and ready to be installed. I recieved the head (which was not very clean and covered in oil/coolant). Instead of getting messy, I took the head to a local shop that I was refered to. I asked them too look over the head and let me know if anything is wrong before doing work. I couldn't get them the valve seals because I ordered from Majestic and it took to long for them to get here. I told them to do the job since nothing was wrong and I'll take care of the seals.

I got the head back from the shop with a box that had the springs, seats, retainers and cotters in it. Valves were in the head since they did a valve job.

The box wasn't sorted. Everything was mixed together and a small bag with the cotters.

Question #1: Which one is the intake valve spring? (I think it's the one on the left, more coils)

http://www.flickr.com/photos/79709604@N06/7304192962/
http://www.flickr.com/photos/79709604@N06/7304192962/ by http://www.flickr.com/people/79709604@N06/, on Flickr

Question #2: The shop did the work, but when I got it back Cylinder #2 looked like this. Is this ok to put on? it looks like they ground it down a bit because it's smooth, but still. I should have looked at the head first before taking it to the shop. I need to get my car going ASAP. What would happen if I used this head?

http://www.flickr.com/photos/79709604@N06/7304191978/http://www.flickr.com/photos/79709604@N06/7304191978/ by http://www.flickr.com/people/79709604@N06/, on Flickr

http://www.flickr.com/photos/79709604@N06/7304192254/http://www.flickr.com/photos/79709604@N06/7304192254/ by http://www.flickr.com/people/79709604@N06/, on Flickr

http://www.flickr.com/photos/79709604@N06/7304192606/http://www.flickr.com/photos/79709604@N06/7304192606/ by http://www.flickr.com/people/79709604@N06/, on Flickr

I'm pretty displeased right now. I was lied to by the person that sold me the head, and the shop seemed to do a terrible job on it.

Any advice will be greatly appreciated.
Old 05-30-2012, 03:54 PM
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Any thoughts? What would should I do, put it on and cross my fingers, or take it back to the shop?
Old 05-30-2012, 04:26 PM
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The "pits" are fine as long as they are not on the sealing surface. Most likely caused from a piece of metal or broken valve bouncing around. how do the valve seats in cyl 2 look?
Old 05-30-2012, 04:28 PM
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They look good. A valve job was done. I looked at them and it looks good. Thanks for replying, I feel much better now.
Old 05-30-2012, 04:53 PM
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Longer springs are exhaust side. Do they have any paint markings?

Free length should be

Exhaust: 1.984" (50.39mm)
Intake: 1.959" (49.77mm)
Old 05-30-2012, 06:59 PM
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Thank you!
Old 05-31-2012, 01:20 AM
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No markings.
Old 05-31-2012, 04:56 AM
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use oem head studs when re-assembling!
Old 05-31-2012, 09:14 AM
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I'd worry about hot spots in the quench area of that first picture.
Old 05-31-2012, 12:41 PM
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What are hot spots and what do they cause? Thanks.


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